Relative Clauses

Here are my 5 sentences. Can you guess what they are? Good luck!

1) This is a religious person who helped start the Mexican Revolution in the 19th Century.
2) This is a place where thousands of people from Mexico City go to for the beach when it's a holiday.
3) It's an object that has four wheels and runs on petrol.
4) She's a woman who was a First Lady, and now is Foreign Secretary in the US.
5) It's a thing that is kicked around on a field of about 100x120 yards.